Novel buried type high-voltage cable sleeve and manufacturing method thereof

Abstract

The invention discloses a novel buried type high-voltage cable sleeve and a manufacturing method thereof. The novel buried type high-voltage cable sleeve is prepared from the following raw materials in parts by weight: 100 parts of chlorinated polyvinyl chloride, 20-30 parts of polyvinyl chloride, 2.5-3 parts of an organic tin stabilizer, 2-4 parts of glyceryl stearate, 1-2 parts of oxidized polyethylene wax, 1-2 parts of polyethylene wax, 5-10 parts of talc powder, 5-10 parts of nano calcium carbonate, 5-10 parts of magnesium oxide, 0.2-0.6 part of bisphenol A, 1-3 parts of butyl acrylate, and 1-3 parts of a coloring agent, wherein the chlorine content of the chlorinated polyvinyl chloride is 68-75%, and the proportioning ratio of the glyceryl stearate to the glyceryl stearate to the polyethylene wax is (2-4):1:1. The novel buried type high-voltage cable sleeve disclosed by the invention has the beneficial effects of improving the overall performance of a material and increasing strength, toughness and shock resistance of the material.

Description

technical field [0001] The invention relates to a cable casing and a manufacturing method thereof, in particular to a novel buried high-voltage cable casing and a manufacturing method thereof. Background technique [0002] Buried high-voltage power cables are one of the new products used more and more in domestic electric power engineering. Due to the excellent performance of the resin, especially the good rigidity and heat resistance, it can withstand the cable damage generated by high-voltage power cables during operation. The core temperature and the external pressure of the soil on the pipe, and its price is low and easy to install. Therefore, PVC and other buried high-voltage power cable casings have a large market prospect. With the progress of the national power grid renovation project, the layout of the power grid has undergone major reforms, among which, the embedding of high-voltage cables is one of the important reforms, and in the face of this major reform, burie...

AI Technical Summary

Problems solved by technology

With the progress of the national power grid renovation project, the layout of the power grid has undergone major reforms, among which, the embedding of high-voltage cables is one of the important reforms, and in the face of this major reform, buried high-voltage cables and The development of bushings ushered in unprecedented market opportunities, but buried high-voltage cables and bushings also exposed many technical defects and problems, which also promoted continuous innovation and development in this field

[0003] At present, there are still some technical defects in the buried cable casing on the market, for example: during construction, mechanical deformation or rupture caused by insufficient toughness of the casing not only requires more protective measures during construction, but also increases maintenance costs. cost, and in the process of hoisting and transshipment, it is easy to cause local deformation or damage of the casing, thereby affecting the performance of the casing; for some construction environments with undulating terrain and complex rock formations, in order to reduce the difficulty and cost of construction To speed up the project progress of cable laying, to a certain extent, it is necessary to use the toughness of the casing to weld the casing along the excavated trench. Although the existing casing can withstand the pressure of sand and stone on the pipe wall, However, its toughness is low, and it cannot be bent to a large extent, but can only be constructed by segmental welding, which increases the difficulty and cost of construction; the existing casing is faced with the contradiction between strength and toughness, impact resistance and The contradiction of material density, how to better meet the requirements of the use environment, meet the national material testing standards, and overcome the contradiction between material properties are technical problems that need to be solved at present

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